Gasket-cutter.



No.857,647.. Q'PATENTED JUNE 25,1907.

G. T. MILLER.

GASKET CUTTER.

APPLICATION FILED DEO.15,1906.

UNITED STATES PATENT OFFICE.

GASKET-CUTTER.

Specification of Letters Patent.

Patented June 25, 1907.

A li ti n fil d December 15,1906. Serial No. 348,083.

To all whmn it may concern:

Be it known that I, GEORGE T. MILLER, a citizen ofthe United States of America, residing at Jamisonville, in the county of Butler and State of Pennsylvania, have invented certain new and useful Improvements in Gasket-Cutters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to cutters for manufacturing gaskets, washers, and like articles from rubber, leather or like material, and its primary object is to provide a simple and inexpensive device of this character which will effectively serve the purpose in view, and may be quickly adjusted to out gaskets or washers of different diameter.

The construction of the improvement will' i be fully described hereinafter in connection with the accompanying drawing, which forms part of this specification, and its novel features will be defined in the appended claims.

In the drawing, Figure 1 is a side elevation of a cutter embodying the invention, Fig. 2 is an end elevation of the same, Fig. 3 is a vertical sectional view, Fig. 4 is an elevation of one of the knives employed detached, Fig. 5 is a vertical sectional view showing the knives in a position the reverse of that shown in Fig. 3, and Fig. 6 is a view in perspective of one of the knives detached.

The reference numeral 1 designates a shank or stem tapered at its upper end 2 for attachment to a suitable brace, and provided at its lower end with a sharpened prong 3 serving as a centering point for the device.

To the lower portion of the shank 1 is secured a head comprising two parallel plates 4, each formed on its inner side with a groove 5, said grooves serving as a guide-way to receive the flanges 6 of the knives.

The lower edges of the plate 4 are formed with teeth 7 for the purpose hereinafter explained and the outer surfaces 8 of said plates are formed with graduations extending from the center outward in each direction, said graduations being preferably divided by sixteenths of an inch.

Each of the knives 9 is provided with a flange 6 extending from the upper end thereof at right angles thereto, and having a square opening 10 to receive a squared pin 1 1 to the lower end of which is secured a cross bar 12 of triangular form in cross section, to adaptit to fit between the teeth of the plates 4. The headed upper ends of the pins 11 extend between and project above the plates 4, and each of said pins is encircled by a coil spring 13one end of which rests upon the flange 6 of the adjacent knife, while the opposite end of said spring bears against the under face of the head 14 of the pin.

It is obvious that the tension of the springs 13 serves to hold the cross-bars 12 in engagement with the teeth, and that by depressing the pins to disengage their cross-bars from the teeth 7, the knives may be adjusted to any desired position upon the plates 4.

As shown in Figs. 1 and 3 the flanges 6 of the knives extend toward the center pin 3, but as illustrated in Fig. 5 the position of the knives may be reversed.

In cutting gaskets the knife nearest the center cuts out the center of the gasket while the other knife cuts the outer edge of the gasket.

The utility and operation of the device Will be readily understood. The shank or bit 1 is secured within a suitable brace (notshown) and revolved thereby to effect the required cutting of the material, the prong 3 serving as a central guide or pivotal point for the bit.

I woudl have it understood that the invention includes all such changes and modifications in the minor details of construction as may be resorted to without departing from the terms and scope of the following claims.

What I claim and desire to secure by Letters Patent, is

1. A gasket cutter comprising a shank or bit provided with a depending prong, plates carried by said shank and provided with guide-ways on their inner sides, and graduated on their outer surfaces, said plates being also provided with edge teeth, knives supported within said guide-ways, and means for adjusting said knives consisting of springpressed pins and cross bars secured to said pins and adapted to engage said teeth.

2. A gasket cutter comprising a shank or bit provided with a depending prong, plates carried by said shank formed on their inner sides with guide-ways, and graduated on their outer surfaces, and having their lower edges formed with teeth, reversible knives provided with horizontal flanges fitting said guide-ways and having squared openings, pins extending through said openings, springs encircling said pins, and cross bars at the lowelil ends of said pins adapted to engage said teet In testimony whereof I affiX my signature 1n the presence of two witnesses.

GEORGE T. MILLER.

i/Vitnesses JOHN C. HIRST, THOMAS J. NEWOOME. 

